English verb conjugation COULD HELIOGRAPH

Regular verb: heliograph - heliographed - heliographed

Affirmation

Simple form

I could heliograph
you could heliograph
he could heliograph
we could heliograph
you could heliograph
they could heliograph

V-ing form

I could be heliographing
you could be heliographing
he could be heliographing
we could be heliographing
you could be heliographing
they could be heliographing

Perfect

I could have heliographed
you could have heliographed
he could have heliographed
we could have heliographed
you could have heliographed
they could have heliographed

V-ing perfect

I could have been heliographing
you could have been heliographing
he could have been heliographing
we could have been heliographing
you could have been heliographing
they could have been heliographing

Negation

Simple form

I couldn't heliograph
you couldn't heliograph
he couldn't heliograph
we couldn't heliograph
you couldn't heliograph
they couldn't heliograph

V-ing form

I couldn't be heliographing
you couldn't be heliographing
he couldn't be heliographing
we couldn't be heliographing
you couldn't be heliographing
they couldn't be heliographing

Perfect

I couldn't have heliographed
you couldn't have heliographed
he couldn't have heliographed
we couldn't have heliographed
you couldn't have heliographed
they couldn't have heliographed

V-ing perfect

I couldn't have been heliographing
you couldn't have been heliographing
he couldn't have been heliographing
we couldn't have been heliographing
you couldn't have been heliographing
they couldn't have been heliographing

Interrogative form

Simple form

could I heliograph?
could you heliograph?
could he heliograph?
could we heliograph?
could you heliograph?
could they heliograph?

V-ing form

could I be heliographing?
could you be heliographing?
could he be heliographing?
could we be heliographing?
could you be heliographing?
could they be heliographing?

Perfect

could I have heliographed?
could you have heliographed?
could he have heliographed?
could we have heliographed?
could you have heliographed?
could they have heliographed?

V-ing perfect

could I have been heliographing?
could you have been heliographing?
could he have been heliographing?
could we have been heliographing?
could you have been heliographing?
could they have been heliographing?

Interro-negative form

Simple form

couldn't I heliograph?
couldn't you heliograph?
couldn't he heliograph?
couldn't we heliograph?
couldn't you heliograph?
couldn't they heliograph?

V-ing form

couldn't I be heliographing?
couldn't you be heliographing?
couldn't he be heliographing?
couldn't we be heliographing?
couldn't you be heliographing?
couldn't they be heliographing?

Perfect

couldn't I have heliographed?
couldn't you have heliographed?
couldn't he have heliographed?
couldn't we have heliographed?
couldn't you have heliographed?
couldn't they have heliographed?

V-ing perfect

couldn't I have been heliographing?
couldn't you have been heliographing?
couldn't he have been heliographing?
couldn't we have been heliographing?
couldn't you have been heliographing?
couldn't they have been heliographing?

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